Why is it most important to know the oxide content of raw materials?

Unit 3 Topic 2
Focus on Raw Materials
Knowledge of the oxides in a raw material provides an essential insight into the role that material plays when the recipe is fired to produce a glaze.

Even without any understanding of glaze formuation processes, glazes may be intelligently manipulated to achieve certain goals provided the role of each raw material in the recipe is understood.

Each material contains oxides which fall into one of the three categories as previously described (flux, stabiliser, glass-former)

  Raw Material
  Wollastonite provides---> CaO + SiO2

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